Ductile Iron Pipe, Ductile Iron Pipe Fittings, Valve manufacturer / supplier in China, offering Heavy Duty Ductile Iron Flanged Restraint Adaptor with Brass Thrust Ring Locking Design for HDPE Drinking Water Pipe Project, Factory Forged Sorf Slip on Flange ASME B16.5 Class 150 Raised Face RF Standard Pipe Connection Flange for Water Gas Pipeline, ANSI ASME JIS DIN Standard 150# RF Slip on Flange ASTM A105 Forged Carbon Steel Raised Face Sorf Flange for Pipeline Engineering and so on.